Rioters threw petrol bombs, bricks, bottles and fireworks at police in a third night of violence in Northern Ireland around traditional Protestant marches, wounding one officer early on Monday. Protesters built a burning barricade across one road and burned out one car during the clashes that first flared on Friday following a dispute over a marching route, according to a report of Reuters. A 1998 peace deal mostly ended decades of sectarian strife in the British province but trouble still breaks out.